12133616 has 40 divisors (see below), whose sum is σ = 26034048. Its totient is φ = 5432000.

The previous prime is 12133607. The next prime is 12133619. The reversal of 12133616 is 61633121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12133591 and 12133600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12011 + ... + 12981.

Almost surely, 2^12133616 is an apocalyptic number.

12133616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12133616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13017024).

12133616 is an abundant number, since it is smaller than the sum of its proper divisors (13900432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12133616 is a wasteful number, since it uses less digits than its factorization.

12133616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1055 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 12133616 is about 3483.3340350876. The cubic root of 12133616 is about 229.7894481424.

Adding to 12133616 its reverse (61633121), we get a palindrome (73766737).

The spelling of 12133616 in words is "twelve million, one hundred thirty-three thousand, six hundred sixteen".